โ1997 El Nino to date peaked earlier than 2015 and the core of the highest SST anomalies was farther east near the South American coast.โ โ NOAA today
The 1997 El Nino was the strongest on record. The current El Nino could become the strongest on record, but we wonโt know until February or later when NOAA tallies up the average sea surface temperatures from November, December, and January.